For those interested, 9.4 patch's got the new descended quests. Each category nets you their respective permanent co-op Ultimate rush dungeon (ie. Devil category = Ultimate Devil Rush).
From what I gathered in various friends (and places), the categories and rewards(besides the co-op rushes) are:
1. Hera - Jewels
2. Zeus - Jewels (this one nets you Zeus rush, instead of God rush)
3. Devil - Extreme King Metal Dragons
4. Super Dragon - Jewels
5. Yamato - Extreme King Metal Dragons
6. Special (Rouge) - Pys
All of them requires both difficulties to clear, even the Special/Rogue ones. Pretty good rewards, though not sure about the perm co-op rush.
Other than that, I'm liking the 9.4 patch, mainly because more box spaces are always good.